Talaridris

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Talaridris
Talaridris mandibularis
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Myrmicinae
Tribe: Attini
Genus: Talaridris
Weber, 1941
Type species
Talaridris mandibularis
Diversity
1 species
(Species Checklist)

Talaridris mandibularis casent0102365 profile 1.jpg

Talaridris mandibularis

Talaridris mandibularis casent0102365 dorsal 1.jpg

Specimen Label

Evolutionary Relationships
Attini

Ochetomyrmex (2 species), Tranopelta (2 species)




Allomerus (8 species), Blepharidatta (4 species), Diaphoromyrma (1 species), Lachnomyrmex (16 species), Wasmannia (11 species)






Acanthognathus (7 species), Colobostruma (16 species), Daceton (2 species), Epopostruma (19 species), Lenomyrmex (7 species), Mesostruma (9 species), Microdaceton (4 species), Orectognathus (29 species),




Acromyrmex (62 species), Apterostigma (44 species), Atta (19 species), Cyatta (1 species), Cyphomyrmex (23 species), Kalathomyrmex (1 species), Mycetophylax (21 species), Mycetagroicus (4 species), Mycetarotes (4 species), Mycetosoritis (2 species), Mycocepurus (6 species), Myrmicocrypta (31 species), Sericomyrmex (11 species), Trachymyrmex (49 species), Xerolitor (1 species)





Pheidole
  (1,141 species)




Cephalotes
  (119 species)



Procryptocerus
  (45 species)







Strumigenys
  (836 species)




Phalacromyrmex
  (1 species)



Pilotrochus
  (1 species)







Protalaridris
  (7 species)



Rhopalothrix
  (16 species)





Basiceros
  (8 species)




Octostruma
  (34 species)




Eurhopalothrix
  (53 species)



Talaridris
  (1 species)














Based on Ward et al. (2014), Blaimer et al. (2018) and Li et al. (2018).

A monotypic genus. Talaridris mandibularis is a small litter dwelling tropical rainforest ant that, like the similar Rhopalothrix, is not well collected. It has been found in litter and humus.

Identification

Worker and female: Antennae with 7 segments total. Very similar to Rhopalothrix, but with somewhat different mandibles. These are elongate as in Rhopalothrix, but curve dorsad from the plane of the head, finally broadening into an obliquely oriented apical masticatory border with acute and rounded teeth. There are inconspicuous denticles arranged along the inner dorsal margins of the blades also. Of the apical series, the largest acute teeth, one at each end of the series, may correspond to the long, acute subapical and ventral apical teeth forming the "apical fork" of Rhopalothrix, in which case the intervening teeth would represent elaborations of the two intercalary teeth or denticles of Rhopalothrix. In fact, the distinction between these two genera is relatively trivial, and when more species of Rhopalothrix become known, it may well prove advantageous to merge Talaridris with it. (Brown and Kempf 1960)

Distribution

Known from northern South America and Trinidad.

World distribution based on political regions. View/Edit Data
Talaridris Distribution.png Worlddistribution legend.jpg

Species richness

Species richness by country based on regional taxon lists (countries with darker colours are more species-rich). View Data

Talaridris Species Richness.png

Biology

Castes

Males have yet to be collected.

Nomenclature

The following information is derived from Barry Bolton's New General Catalogue, a catalogue of the world's ants.

  • TALARIDRIS [Myrmicinae: Basicerotini]
    • Talaridris Weber, 1941a: 184. Type-species: Talaridris mandibularis, by original designation.
    • Talaridris junior synonym of Rhopalothrix: Baroni Urbani & De Andrade, 1994: 32.
    • Talaridris revived from synonymy: Bolton, 1994: 105.
    • Talaridris junior synonym of Basiceros: Baroni Urbani & De Andrade, 2007: 88.

Unless otherwise noted the text for the remainder of this section is reported from the publication that includes the original description.

Worker

Size small. Head angular, broader than long, occipital margin concave, occipital corners angulate, sides in front of corners expanded as lobes, sides converging from thence to mandibles; anterior clypeal margin concave, frontal lobes small; antennal scrobes deep, complete and receiving distal part of scape and funiculus; eyes minute, situated on upper margin of middle antennal scrobes on posterior half of head; mandibles porrect, arcuate, narrow in front view but expanded apically so that the two mandibles meet to form a basket, expanded apical portion with a series of irregular teeth, denticles and lobes, basal portion of mandibles with a series of denticles medially; antennae 7-jointed, scapes broad, strongly elbowed and attached by a distinct pedicel, terminal funicular joint long and narrow, as long or longer than the preceding funicular joints taken together. Pro-mesonotum in profile not markedly impressed, meso-epinotal impression marked; thorax about two-thirds as broad through pronotum as its length to the epinotal spines; epinotum with distinct basal and declivous surfaces, spines large and triangular, continued downward as a lamella on either side. Petiole strongly pedunculate and with a distinct node, mid-ventrally with a small tooth near the epinotum and directed forwards, postpetiole from above transverse, anterior margin concave, posterior medial margin produced as two gibbosities. Gaster ovate, first gastric segment concave anteriorly and covering about three-fourths of the gaster; sting short, exserted. Legs moderately long and slender. Opaque, punctate. Pilosity of coarse squamate hairs on the antennal scapes and body; scale-like or clavate hairs on appendages more numerous. Ferruginous.

Queen

Similar to the worker. Size small but distinctly larger than the worker. Winged. Eyes and ocelli large and prominent, the eyes located before the distal end of the antennal scrobes and partially dividing them; mandibles as in worker; general configuration of head as in worker; epinotal spines and lamellae as in worker. Opaque, punctate, with squamate and clavate hairs as in worker. Ferruginous.

Etymology

From Talapos, a wicker-basket, sometimes a wicker-basket for fowls, and iopis, the "knowing or provident one," in allusion to the remarkable mandibles which come together at their apices in somewhat the form of a basket. According to Dr. W. M. Wheeler, Hesiod referred to the ant, probably specifically the harvesting ant (Messar), as the "knowing or provident one."

References

  • Baroni Urbani, C.; De Andrade, M. L. 1994. First description of fossil Dacetini ants with a critical analysis of the current classification of the tribe (Amber Collection Stuttgart: Hymenoptera, Formicidae. VI: Dacetini). Stuttg. Beitr. Naturkd. Ser. B ( (page 32, Talaridris in Myrmicinae, Dacetini; Talaridris as junior synonym of Rhopalothirx)
  • Bolton, B. 1994. Identification guide to the ant genera of the world. Cambridge, Mass.: Harvard University Press, 222 pp. (page 105, Talaridris as genus; Talaridris in Myrmicinae, Basicerotini)
  • Bolton, B. 1998a. Monophyly of the dacetonine tribe-group and its component tribes (Hymenoptera: Formicidae). Bull. Nat. Hist. Mus. Entomol. Ser. 67: 65-78 (page 67, Talaridris as genus; Talaridris in Myrmicinae, Basicerotini)
  • Bolton, B. 2003. Synopsis and Classification of Formicidae. Mem. Am. Entomol. Inst. 71: 370pp (page 185, Talaridris in Myrmicinae, Basicerotini)
  • Brown, W. L., Jr. 1948e. A preliminary generic revision of the higher Dacetini (Hymenoptera: Formicidae). Trans. Am. Entomol. Soc. 74: 101-129 (page 102, Talaridris in Myrmicinae, Dacetini)
  • Brown, W. L., Jr. 1949h. Revision of the ant tribe Dacetini: IV. Some genera properly excluded from the Dacetini, with the establishment of the Basicerotini new tribe. Trans. Am. Entomol. Soc. 75: 83-96 (page 94, Talaridris in Myrmicinae, Basicerotini)
  • Brown, W. L., Jr. 1973b. A comparison of the Hylean and Congo-West African rain forest ant faunas. Pp. 161-185 in: Meggers, B. J., Ayensu, E. S., Duckworth, W. D. (eds.) Tropical forest ecosystems in Africa and South America: a comparative review. Wash (page 185, Talaridris provisional junior synonym of Rhopalothirx)
  • Brown, W. L., Jr.; Kempf, W. W. 1960. A world revision of the ant tribe Basicerotini. Stud. Entomol. (n.s.) 3: 161-250 (page 241, Talaridris in Myrmicinae, Basicerotini)
  • Donisthorpe, H. 1943h. A list of the type-species of the genera and subgenera of the Formicidae. [concl.]. Ann. Mag. Nat. Hist. 11(10): 721-737 (page 730, Talaridris in Myrmicinae, Dacetini)
  • Kempf, W. W. 1972b. Catálogo abreviado das formigas da regia~o Neotropical. Stud. Entomol. 15: 3-344 (page 246, Talaridris in Myrmicinae, Basicerotini)
  • Weber, N. A. 1941a. Four new genera of Ethiopian and Neotropical Formicidae. Ann. Entomol. Soc. Am. 34: 183-194 (page 183, 184, Talaridris in Myrmicinae, Dacetini [Dacetonini])